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 data       graph     Data from a local source.    ?            M   background (external link) RSS Subscribe ??? norton_bathy_20090101

The Dataset's Variables and Attributes

Row Type Variable Name Attribute Name Data Type Value
attribute NC_GLOBAL _CoordSysBuilder String ucar.nc2.dataset.conv.CF1Convention
attribute NC_GLOBAL acknowledgement String These bathymetry data were proofed, edited and digitized by Megan Prescott and Mark Zimmermann. Funding for much of the work, as part of a Groundfish Assessment Program (GAP), was provided by NOAA's Essential Fish Habitat (EFH), Habitat and Ecological Processes Research (HEPR) through the Alaska NMFS Regional Office. Smooth sheet data was obtained from the Nation Geophysical Data Center (NGDC) website.
attribute NC_GLOBAL cdm_data_type String Grid
attribute NC_GLOBAL Conventions String CF-1.6, COARDS, Unidata Dataset Discovery v1.0
attribute NC_GLOBAL creator_email String megan.prescott@noaa.gov and mark.zimmermann@noaa.gov
attribute NC_GLOBAL creator_institution String AFSC.NOAA.GOV
attribute NC_GLOBAL creator_name String Megan M. Prescott and Mark Zimmermann
attribute NC_GLOBAL date_created String 2015
attribute NC_GLOBAL date_metadata_modified String 2017-08-09T15:00:00Z
attribute NC_GLOBAL description String As a continuation of work in Alaskan waters, scientists with the AFSC's Groundfish Assessment Program (GAP) have published smooth sheet bathymetry for Norton Sound, Alaska. This work is part of a project using smooth sheets to provide better seafloor information for fisheries research. The Norton Sound project includes smooth sheet bathymetry editing, the digitizing of sediments, inshore features, and shoreline, as well as incorporating higher resolution multibeam bathymetry data, where available, to supersede some areas of older, lower resolution smooth sheet bathymetry. Over 230,000 National Ocean Service (NOS) bathymetric soundings from 39 smooth sheet surveys in Norton Sound were corrected, digitized, and assembled, as well as over 6000 soundings from a GAP research cruise, and three NOS multibeam surveys. The bathymetry compilation ranged geographically from the eastern point of St. Lawrence Island, southeast to the Yukon River delta and north along the Seward Peninsula and around the point of Cape Prince of Wales. Norton Sound coverage is very shallow, with a maximum depth of 63 meters in the outer waters along the Bering Sea, while the sound itself, bounded by the westernmost point on the Yukon River delta along the south and Nome on the North, has an average depth of just 13 meters. The original, uncorrected smooth sheet bathymetry data sets are available from the National Geophysical Data Center (NGDC), which archives and distributes data that were originally collected by the NOS and others. These data are not to be used for navigational purposes.
attribute NC_GLOBAL GDAL String GDAL 1.11.1, released 2014/09/24
attribute NC_GLOBAL GDAL_AREA_OR_POINT String Area
attribute NC_GLOBAL history String Wed Aug 09 05:00:00 2017: W.Koeppen (Axiom) updated netCDF metadata; Wed May 06 08:52:49 2015: GDAL CreateCopy( norton_bathy_20090101.nc, ... )
attribute NC_GLOBAL infoUrl String ???
attribute NC_GLOBAL institution String ???
attribute NC_GLOBAL keywords String band, data, gdal, local, number, source, statistics
attribute NC_GLOBAL license String The data may be used and redistributed for free but is not intended
for legal use, since it may contain inaccuracies. Neither the data
Contributor, ERD, NOAA, nor the United States Government, nor any
of their employees or contractors, makes any warranty, express or
implied, including warranties of merchantability and fitness for a
particular purpose, or assumes any legal liability for the accuracy,
completeness, or usefulness, of this information.
attribute NC_GLOBAL Metadata_Conventions String CF-1.6, COARDS, Unidata Dataset Discovery v1.0
attribute NC_GLOBAL online_link String http://www.afsc.noaa.gov/RACE/groundfish/bathymetry/Norton_Sound_bathymetry_grid.zip (external link)
attribute NC_GLOBAL processing_level String While various bathymetry data have been downloaded previously from NGDC, compiled, and used for a variety of projects, our effort differed in that we compared and corrected the digital bathymetry by studying the original analog source documents - digital versions of the original survey maps, called smooth sheets. The edited smooth sheet bathymetry points, along with the digitized shoreline points, features with elevations, and additional single-beam, and multibeam data points, were processed into a solid surface of variably-sized triangles (Triangular Irregular Network or TIN) which utilized the points as corners of the triangles. The TIN was then converted by area-weighted (nearest neighbor) interpolation into a solid surface of 100 m squares (GRID). Portions of the grid that fell on land were removed from the final coverage.
attribute NC_GLOBAL source String NOAA/NMFS/AFSC
attribute NC_GLOBAL sourceUrl String (local files)
attribute NC_GLOBAL standard_name_vocabulary String CF-12
attribute NC_GLOBAL summary String Data from a local source.
attribute NC_GLOBAL time_coverage_end String 2009-01-01T00:00:00Z
attribute NC_GLOBAL time_coverage_start String 2009-01-01T00:00:00Z
attribute NC_GLOBAL title String Data from a local source.
dimension time   double nValues=1, onlyValue=2009-01-01T00:00:00Z
attribute time _CoordinateAxisType String Time
attribute time actual_range double 1.230768E9, 1.230768E9
attribute time axis String T
attribute time calendar String gregorian
attribute time ioos_category String Time
attribute time long_name String Time
attribute time standard_name String time
attribute time time_origin String 01-JAN-1970 00:00:00
attribute time units String seconds since 1970-01-01T00:00:00Z
dimension y   double nValues=3464, evenlySpaced=true, averageSpacing=100.0
attribute y _CoordinateAxisType String GeoY
attribute y actual_range double 1468967.55978902, 1815267.55978902
attribute y ioos_category String Location
attribute y long_name String y coordinate of projection
attribute y standard_name String projection_y_coordinate
attribute y units String m
dimension x   double nValues=4231, evenlySpaced=true, averageSpacing=100.0
attribute x _CoordinateAxisType String GeoX
attribute x actual_range double -745695.1512796627, -322695.15127966274
attribute x ioos_category String Location
attribute x long_name String x coordinate of projection
attribute x standard_name String projection_x_coordinate
attribute x units String m
variable Band1   float time, y, x
attribute Band1 _FillValue float 1.175494E-38
attribute Band1 colorBarMaximum double 100.0
attribute Band1 colorBarMinimum double 0.0
attribute Band1 coverage_content_type String modelResult
attribute Band1 grid_mapping String albers_conical_equal_area
attribute Band1 ioos_category String Statistics
attribute Band1 long_name String GDAL Band Number 1
attribute Band1 standard_name String sea_floor_depth_below_sea_surface
attribute Band1 units String m

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